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Qaagi - Book of Why

Causes

Effects

Some HRWRsmay causea higher rate of slump loss with time and concrete may revert to its original slump in 30 to 45 minutes

saline solutionscauselong term compressive strength loss of concrete

unique organic compoundsdesignedto minimize moisture loss from fresh concrete

pitch and speeddesignedspecifically for low - slump concrete

the more intense the hydration reaction isleadsto the slump loss of fresh concrete

Variablescauseasphalt concrete to deteriorate over time

the gas phase of sewerscausesloss of concrete mass

the mass of concrete ... the curecould leadto a loss of concrete strength

too much powdercausesloss of concrete strength

a great deal of water ... the floor systemcould be causingdeterioration of the concrete deck

by corrosion(passive) caused bythe loss of concrete strength

Must be used with caution as too muchcan causestrength loss in the concrete

synthetic polymersspecially designedto impart low slump rheoplastic qualities to concrete

This area ... other elementshave causedearly deterioration in the concrete

CO2will ... resultin loss of alkalinity of concrete

that water absorbed into the aggregatewill causeexcessive slump loss

the ingress of Co2resultsin loss of concrete alkalinity

to efficiently handle stiff , large aggregate concrete used in locks , dams , and other heavy construction(passive) are designedLow Slump Concrete Buckets

the temperature gradient ... the peripheralleadsto a decrease in the strength of concrete

the factorinfluenceconcrete slump test

the pitch and speeddesigned specificallyfor transporting low slump concrete

Corrosive forces ... well knownto causedeterioration in the strength of the concrete

This frequently happens to sills , copings , and water tables where repeated heavy wettingleadsto loss of alkalinity in the concrete

the concrete structure that supports the bridge ... continued spallingcausesloss of concrete

The impactcausedconcrete loss

the grade on your jobcausesconcrete loss

rebar placementcausedloss of concrete

by improper casting(passive) caused byconcrete losses

pitch and speeddesigned specificallyfor low - slump concrete

contractcausingconcrete to crack and slump

even when installation was delayedsignificantly resultingin zero slump concrete

by other factors(passive) caused bythe slump loss

prolonged mixingwill causeslump loss

by hydration(passive) caused byslump loss

the aggregate poresresultingin slump loss

Variablescauseasphalt concrete to deteriorate

several agents ... these agentscausedeterioration of concrete

1 %ledto decreases the concrete slump

high range water - reducing agentdesignedto produce high slump concrete

a ready - to - use , high range water - reducing agentdesignedto produce high slump concrete

in lowresultsin low

in low permeability concrete and allows chloride ions to do corrode the structureresultsin low permeability concrete and allows chloride ions to do corrode the structure

to cracking and problems with the surfacecan leadto cracking and problems with the surface

from its errors rather thanresultedfrom its errors rather than

MasterRheobuild 561(passive) is specially designedMasterRheobuild 561

time , unit weight , segregation and bleeding ) and hardened concretesettingtime , unit weight , segregation and bleeding ) and hardened concrete

the bridge to become structurally deficienthas causedthe bridge to become structurally deficient

the following problemscan resultthe following problems

in low permeability concreteresultsin low permeability concrete

all set mixcan leadall set mix

surface failureis causingsurface failure

to cracking ( surface water evaporates at a faster rate that it can replaced by bleed wateroften leadsto cracking ( surface water evaporates at a faster rate that it can replaced by bleed water

in difficulty of concrete placement , consolidation , and finishingwill resultin difficulty of concrete placement , consolidation , and finishing

for constructing columnsdesignedfor constructing columns

specifically for reinforced wall constructiondesignedspecifically for reinforced wall construction

water to poolwill causewater to pool

to fluid migrationcan leadto fluid migration

a FORM TECH CONCRETE FORMS INCmay causea FORM TECH CONCRETE FORMS INC

mobility degradationcausesmobility degradation

to a collapsecan leadto a collapse

to its failurefinally leadingto its failure

all set mixmay leadall set mix

to spalling concrete at various locationsledto spalling concrete at various locations

significant reflection of the asphalt layercausedsignificant reflection of the asphalt layer

to increased settlement cracking , the principal reason that transverse cracks form directly above and parallel to the top reinforcing steelleadsto increased settlement cracking , the principal reason that transverse cracks form directly above and parallel to the top reinforcing steel

times or early strength developmentsettingtimes or early strength development

time and bleedingsettingtime and bleeding

in difficulties during finishing and placementmay resultin difficulties during finishing and placement

to its failureleadingto its failure

in moneyresultin money

the total closure of the Richmond - San Rafael Bridgepromptedthe total closure of the Richmond - San Rafael Bridge

in safety , functional , structural or aesthetic problemsmay resultin safety , functional , structural or aesthetic problems

by using deicerscausedby using deicers

a closure of the train crossing over Highway 49 in North Auburn Thursday morningis promptinga closure of the train crossing over Highway 49 in North Auburn Thursday morning

High - Cycle Vibrators(passive) are designedHigh - Cycle Vibrators

in stronger slabsresultingin stronger slabs

in premature failure of structuresresultingin premature failure of structures

in aesthetic , functional , or structural problemsmay resultin aesthetic , functional , or structural problems

from a process called Alkali Silica Reaction ( ASRhas resultedfrom a process called Alkali Silica Reaction ( ASR

howeverresultedhowever

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Smart Reasoning:

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